Regensburg 2013 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 46: Photovoltaics (joint session HL/CPP/O)
CPP 46.2: Talk
Friday, March 15, 2013, 09:30–09:45, H2
3D reciprocal space imaging of individual Cu(In,Ga)Se2 nanocrystallites inside a thin film solar cell — •Taras Slobodskyy1, Anatoliy Slobodskyy2, Boris Landgraff1, Christian Heyn1, and Wolfgang Hansen1 — 1Institute for Applied Physics, University of Hamburg, Jungiusstraße 11, D-20355 Hamburg, Germany — 2Karlsruhe Institute of Technology (KIT), Light Technology Institute (LTI), Kaiserstraße 12, 76131 Karlsruhe, Germany
In this contribution we will present results of an investigation of strain distributions inside of individual Cu(In,Ga)Se2 nanocyrstallites located inside a solar cell absorber layer. The strain is imaged using synchrotron radiation.
We find that the investigated crystallites are non homogeneously strained. The strain is produced by surrounding nanocrystals in the polycrystalline semiconductor film and carries information about the intercrystalline interactions. The measurements are done non destructively and without additional sample preparation or X-ray beam nanofocusing.
The demonstrated technique provides a way for connecting variations in the properties of individual crystallites inside of a working solar cell to the resulting energy conversion efficiency.